Question: Codon that specify the amino acids often differs in the
[A].first base
second base
third base
none of these
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Biochemistry
AUG codes for methionine act as a
Question: AUG codes for methionine act as a
[A].initiation code
elongation code
termination code
propagation code
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Bacterial protein called catabolic activator protein (CAP) is an example of
Question: Bacterial protein called catabolic activator protein (CAP) is an example of
[A].negative control of gene expression
positive control of gene expression
second type of positive control of gene expression
none of the above
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
In prokaryotes, AUG encodes
Question: In prokaryotes, AUG encodes
[A].methionine
N-formyl methionine
a stop codon
alanine
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Which of the following techniques was carried out by Nirenberg and Matthaei in 1961 to determine the first codon?
Question: Which of the following techniques was carried out by Nirenberg and Matthaei in 1961 to determine the first codon?
[A].In vitro synthesis of a polypeptide using UUUUU
Labeled peptide binding to a ribosome
Mixed co-polymer mRNA synthesis
none of the above
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Crick demonstrated that the genetic code involved three bases and suggested that the code was degenerated. What experimental technique Crick conducted to suggest genetic code degeneration?
Question: Crick demonstrated that the genetic code involved three bases and suggested that the code was degenerated. What experimental technique Crick conducted to suggest genetic code degeneration?
[A].Gel electrophoresis
Density gradient centrifugation
Frameshift mutagenesis
Restriction digests of the rII gene
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
In isoelectric focusing, proteins are separated on the basis of their
Question: In isoelectric focusing, proteins are separated on the basis of their
[A].relative content of positively charged residue only
relative content of negatively charged residue only
size
relative content of positively and negatively charged residue
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
In SDS-PAGE, the protein sample is first
Question: In SDS-PAGE, the protein sample is first
[A].treated with a reducing agent and then with anionic detergent followed by fractionation by electrophoresis
fractionated by electrophoresis then treated with an oxidizing agent followed by anionic detergent.
treated with a oxidizing agent and then with anionic detergent followed by fractionation by electrophoresis
none of the above
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
In an SDS-PAGE
Question: In an SDS-PAGE
[A].proteins are denatured by the SDS
proteins have the same charge-to-mass ratio
smaller proteins migrate more rapidly through the gel
all of the above
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
In a native PAGE, proteins are separated on the basis of
Question: In a native PAGE, proteins are separated on the basis of
[A].net negative charge
net charge and size
net positive charges size
net positive charge
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.